Selection of camera filters for color photography/
Calvin S. McCamy · 1964
One of the problems facing the serious color photographer-whether he is a hobbyist or , scientist trying to record accurately some physical phenomenon-is matching his color film o the light he is using to take the picture.Color films are usually balanced for a particular kind of light, classified as "daylight,"'flash/' "3200 °K," or "photoflood."When a film is used in light with a different color mlance, filters are used over the camera lens to bring the combination back into agreement.